Frequently Asked Questions

A technician arrives in a marked vehicle, lays drop cloths, runs a HEPA-filtered vacuum at the firebox, and sweeps the flue from bottom to top or top to bottom depending on your setup. You'll get photos and readings of what we found before we leave, under Clause 4 of the Haven Standard. The whole visit typically takes 45 to 90 minutes for a standard fireplace. We walk you through anything we saw, answer questions, and leave the written report. No door upsell, no "while we're in here" surprises.

Plan on 45 to 90 minutes for a typical single-flue fireplace cleaning. A second flue, a wood stove liner, or heavy creosote that requires multiple brush passes can push the visit toward two hours. Access matters too: homes in Rockville's older neighborhoods sometimes have steep roof pitches that slow rooftop work. We'll tell you the expected window when you book, and we arrive on schedule under Clause 2 of the Haven Standard with a named tech and a text when they're on the way.

You should be home for the first visit so we can walk you through what we find and show you the photos while the chimney is fresh. For repeat cleanings, some Rockville homeowners give us access and review the written report afterward, but being there is genuinely useful the first time. It's your chance to see the readings, ask questions, and understand what normal looks like for your fireplace. The inspection that actually looks inside works best when you're looking too.

A properly run sweep should not leave dust in your living room. We use HEPA-filtered vacuums and lay drop cloths from the entry to the hearth. Your furniture, floors, and air should be exactly as you left them. If a company tells you chimney cleaning is inherently dusty, they're describing their process, not the trade. In hundreds of Rockville homes from Falls Grove to King Farm, we clean the chimney and leave the house the way we found it.

Yes, and whether we sweep top-down or bottom-up depends on your roof pitch, chimney height, and liner condition. Some flues are safer and cleaner to sweep from the firebox with a rotary system that keeps soot contained. Others need rooftop access. Either way, we're looking at the cap, crown, and flashing while we're up there, which is where Rockville's freeze-thaw cycles and wet winters tend to create problems. The flue gets cleaned either way; the inspection notes come from the full exterior check regardless.

We install stainless steel and aluminum liners sized to your flue and appliance. When a liner repair rather than replacement is appropriate, we use HeatShield, a cerfied cast-in-place system that resleeves damaged flue tiles without a full teardown. For replacements, we work with brands like Olympia Chimney and Famco, selected for consistency and warranty coverage. The right liner depends on your fuel type, your appliance, and the condition of the existing flue, which is why a camera scan comes first. We'll show you the footage and explain what we're seeing before recommending anything.

HeatShield is a cast-in-place ceramic resurfacing system that repairs cracked flue tiles and restores a smooth, insulated lining without removing the old chimney. It's a legitimate repair option for specific failure patterns, and we use it when the camera footage shows localized spalling or gaps rather than full structural collapse. In Rockville's older housing stock, where many fireplaces were built with clay tile liners now 50 or 60 years old, HeatShield frequently buys the chimney another decade or two at a lower price than a full liner replacement. The camera decides.

We size caps based on flue dimensions and recommend stainless steel for corrosion resistance through Maryland's wet, freeze-thaw winters. Galvanized caps are cheaper and rust within a few seasons. The right cap does two jobs: it keeps rain, squirrels, and birds out of the flue, and it contains sparks that could ignite debris on the roof. Missing or damaged caps are among the most common findings on Rockville chimney inspections, and the fix is usually quick. We carry caps with us and can install one the same visit if your cap is missing or failed.

Yes. Damper replacement or repair and smoke chamber parging are both routine for us. A damper that won't open or seal properly wastes heat in winter and drags smoke into the room when you light a fire. Smoke chambers in older Rockville fireplaces often have step cracks or missing parging, which creates a creosote trap that's hard to clean. We'll show you photos of what we found, quote the repair in writing under Clause 1, and do the work in a follow-up visit if it's beyond the scope of a standard cleaning.

Every pro working under our name is required to hold the license and insurance their state requires. Corrine Halstead leads the Rockville branch and can produce documentation on request. We don't believe licensing is a marketing point, it's a baseline. You're welcome to ask what a technician's credentials are before they arrive. If a company hesitates to answer that question in Montgomery County, Maryland, that hesitation is your answer.

The crews working under our name are verified, which means licensed, insured, and background-checked, under Clause 3 of the Haven Standard. That's a requirement of the brand, not a promise we make lightly. We enter your home, so the standard matters. If you have a specific question about who's coming, call (571) 376-7052 and our coordinator will tell you the technician's name before they arrive.

Check three things: license and insurance, a written flat price before work starts, and a documented report after. Those three eliminate most of the bad experiences people describe. Ask if the inspection includes a camera scan for any job beyond a simple cleaning. Ask what the written report includes. Ask who's coming and when. A real professional answers all three without hesitation. Corrine Halstead and the Rockville team are happy to walk you through our paperwork before you book.

A chimney fire is a fire department call first, always. Once the fire is out and the house is safe, we can perform a Level 2 camera inspection to assess what happened and whether the flue is damaged. What you should not do is light another fire until someone has looked inside with a camera. Chimney fires burn hot enough to crack clay liners and warp stainless steel, and the damage is invisible from the firebox. We'll inspect, document, and give you a written assessment of what's next.

Yes, and this is one of the most common calls we get. Homebuyers in Rockville, Bethesda, and Gaithersburg typically need a Level 2 inspection, which includes the camera scan that most real estate transactions and insurance companies require after a change of ownership. We schedule around your inspection window, deliver the report in writing with photos, and flag anything that should affect your negotiation. If the seller had the chimney "cleaned" recently, get the inspection anyway. Clean and sound are different things, and only the camera shows which one you're buying.

Heavy creosote, called Stage 3, is glazed and tarlike, and it requires mechanical removal with rotary tools before any fire is lit. This is the condition that fuels chimney fires, and it's common in Rockville fireplaces that get burned hot and fast without a proper annual cleaning. We'll remove what's safe to remove mechanically, show you what it looked like, and talk about burn practices that reduce buildup going forward. If the flue is beyond a cleaning, we'll tell you that plainly with footage to show why.

Not if you don't know what's inside it. A chimney that hasn't been inspected in years can hide a cracked liner, a blocked flue, or an animal nest, any of which creates a carbon monoxide risk or fire hazard. A failed liner allows heat and gases where they don't belong. Birds and squirrels in Rockville find uncapped flues regularly. If you're unsure, schedule an inspection before the first fire of the season and let us show you what we see. It's the inspection that actually looks inside, and it's the only way to know.

The guarantee is the Haven Standard: every job is quoted in writing before it starts and leaves a documented record when we leave. 38,000+ chimneys have been inspected and cleaned under that standard since 2009, each with a written price agreed before the work and evidence of the result after. For liners and installed parts, manufacturer warranties apply and we'll show you those documents before you sign. If something isn't right after we leave, call (571) 376-7052 and we'll make it right.

Yes, and the warranty comes from the manufacturer, not from a handshake. HeatShield resurfacing carries its own material warranty, and stainless liner manufacturers like Olympia Chimney back their products with terms we'll hand you in writing before any work begins. What we guarantee at the local level is the installation and the documentation: you'll see the scope, the price, and the before-and-after footage. The Haven Standard doesn't leave warranty terms vague.

Call (571) 376-7052 and tell us what's wrong. If the flue wasn't cleaned to the standard we claimed, we'll return and finish the job at no charge. Every visit produces a written report with photos, so we can look at exactly what was documented and address it directly. Corrine Halstead and the Rockville team would rather return to a home once than have a customer wonder whether the job was done right. That's the entire premise of documenting everything: there's no argument about what happened, because the evidence is on file.

Once a year if you burn fires regularly, and at minimum an annual inspection even if you rarely use the fireplace. The NFPA standard is annual inspection and cleaning as needed, and Rockville's burning season usually runs October through March. The accumulation you're managing is creosote, which forms at different rates depending on wood moisture, burn temperature, and how often the fire is used. A yearly visit catches small problems before they become liner replacements or fire hazards. Spring and summer are easier to schedule; fall fills quickly.

Yes. Gas fireplaces and inserts still need service, though the concerns shift from creosote to venting, gas connections, and log positioning. A gas flue that isn't venting properly creates carbon monoxide risk, not soot. We inspect and service both natural gas and propane units in Rockville homes, and many gas fireplaces in the area were installed in the 90s or 2000s and are now due for real maintenance, not just a wipe of the glass. If you're not sure whether your gas unit has ever been properly inspected, the camera will tell us.

Written by Corrine Halstead, Owner at Level Two Chimney Rockville, serving Rockville, Bethesda, Gaithersburg, and surrounding Montgomery County communities since 2009.